19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following is known molecular formula of washing soda?
What will be the product when ammonium chloride is treated with calcium hydroxide?
Which of the following exist as decahydrate?
Lithium being very small in size, which …A… a large CO ion leading to the formation of more stable …B.. and …C.. Here A, B and C refer to
Solvay process is used in the preparation of
Which of the following statements(s)is/are correct regarding sodium hydroxide? I. It is white and translucent. II. It melts at 591K. III. It is non-deliquescent IV. It is soluble in water and its aqueous solution is h…
Which of the following is correctly represented according to their existence? I. MgCl₂ .6H₂O II. NaCl. 6H₂O III. KCl. 6H₂O IV. CaCl₂. 6H₂O
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
The alkali metal oxides dissolve in water to produce
Choose the incorrect statement out of the following
Which of the following statement (s) is/are correct regarding alkali metal halides? I. They possess high melting point and are crystalline in nature. II. They are prepared by reaction of appropriate oxides with aqueou…
Choose the correct statements (s) regarding lithium and alkali metals I. Lithium is much harder. Its m.p and b.p are higher than other alkali metals. II. Lithium is highly reactive and strongest reducing agent in comp…
Alkali metal nitrates decomposes to produce …X… while lithium nitrate on heating decomposes to corresponding …Y… Here, Y and Y refer fo
Similarity between lithium and magnesium is particularly stricken and arises because of their
Choose the correct statement/statement out of the following (a) f H always became less negative on moving top to bottom for alkali halides (b) f H always becomes less negative from fluoride to iodide for alkali metals
When sodium is dissolved in liquid ammonia is solution of deep blue colour is obtained. The colour of solution is due to
…A… is used in devising photoelectric cells. Here, A refer to
Alkali metals dissolve in liquid ammonia and produces
Match the Column I and Column II and choose the correct option from the codes give below. Column I Column II A. Potassium 1. Soft soap B. Potassium chloride 2. Fertilizer C. Potassium hydroxide 3. Photoelectric cells …
Anomalous behavior of lithium is due to I. exceptionally small size of its atom II. High polarizing power. III. High Charge Radius ratio. Choose the correct option
Which of the following is correct regarding salt of oxo- acids of alkali metals?
Alkaline earth metals are …X… than that of alkali metals. Here, X refer to
Crude sodium chloride obtained by crystallisation of brine solution does not contain (Odisha NEET 2019)
…A…is used in the manufacturing of soft soap. Here, A refer to
Lithium and magnesium oxides and hydroxides are …X… soluble in water. Here, X refers to